Multi-port-group uplink control information signaling and related systems and methods

Abstract

A method in accordance with aspects of the disclosure comprises receiving a plurality of downlink control information (DCI) signals, wherein each DCI signal is associated with a Demodulation Reference Signal (DMRS) Port Group (DMRS-PG) of a plurality of DMRS-PGs, and each DCI signal within the plurality of DCI signals contains a DMRS-PG Identifier (DMRS-PGID) identifying the associated DMRS-PG, performing one or more measurements associated with the each DCI signal, and generating a multi-port-group uplink control information (UCI) signal based on the one or more measurements associated with the each DCI, wherein the multi-port-group UCI signal contains an indication of whether the each DCI is successfully received. The indication can be explicitly contained in the UCI, or implicitly realized using scrambling sequences associated with DMRS-PGs to scramble the UCI.

What is claimed is: 
     
       1. A method for wireless communication by a user equipment (UE), comprising:
 receiving a plurality of downlink control information (DCI) signals, wherein each DCI signal is associated with a Demodulation Reference Signal (DMRS) Port Group (DMRS-PG) of a plurality of DMRS-PGs, and each DCI signal within the plurality of DCI signals contains a DMRS-PG Identifier (DMRS-PGID) identifying the associated DMRS-PG; 
 performing one or more measurements associated with each DCI signal; 
 generating a multi-port-group uplink control information (UCI) signal based on the one or more measurements associated with each DCI signal, wherein the multi-port-group UCI signal contains an indication of whether each DCI is successfully received. 
 
     
     
       2. The method of  claim 1 , further comprising:
 wherein the generating of the multi-port-group UCI signal comprises generating a multi-port-group UCI bitmap having a plurality of portions corresponding to the plurality of DMRS-PGs, wherein each portion of the UCI bitmap corresponds to a unique DMRS-PG within the plurality of DMRS-PGs; 
 packing the UCI bitmap into the multi-port-group UCI signal, and transmitting the multi-port-group UCI signal to at least one network entity associated with at least one DCI of the plurality of DCI signals. 
 
     
     
       3. The method of  claim 2 , wherein a total number of DMRS-PGs within the plurality of DMRS-PGs is obtained by the UE based at least on any combination of an RRC configuration, and/or a separate DCI indication, and/or system information broadcasting, wherein the total number of portions within the UCI bitmap equals the total number of DMRS-PGs within the plurality of DMRS-PGs. 
     
     
       4. The method of  claim 2 , wherein generating the multi-port-group UCI bitmap comprises:
 determining that, for each portion of the UCI bitmap corresponding to a given DMRS-PG, a DMRS-PGID associated with the given DMRS-PG is successfully detected from one of the DCIs; 
 setting this portion of the bitmap that has an associated DMRS-PGID being successfully detected from one of the received DCIs to a first value. 
 
     
     
       5. The method of  claim 2 , wherein the generating further comprises:
 determining that, for each portion of the UCI bitmap corresponding to a given DMRS-PG, an DMRS-PGID associated with the given DMRS-PG is not detected from any of the received DCIs; and 
 setting this portion of the bitmap that has an associated DMRS-PGID not being successfully detected from any of the received DCIs to a second value. 
 
     
     
       6. The method of  claim 1 , wherein the generating of the multi-port-group UCI signal comprises scrambling the multi-port-group UCI signal using a plurality of scrambling sequences associated with the plurality of DMRS-PGs, wherein each scrambling sequence is associated with a unique DMRS-PG within the plurality of DMRS-PGs; and
 the method further comprises transmitting the scrambled UCI signal to at least one network entity associated with at least one DCI of the plurality of DCIs. 
 
     
     
       7. The method of  claim 6 , wherein a total number of DMRS-PGs within the plurality of DMRS-PGs is obtained by the UE based at least on any combination of an RRC configuration, or a separate DCI indication, or system information broadcasting, wherein a total number of scrambling sequences within the plurality of scrambling sequences equals the total number of DMRS-PGs within the plurality of DMRS-PGs, wherein the plurality of scrambling sequences is based at least on predefinition within a standard, and/or RRC configuration, and/or DCI indication, and/or system information broadcast. 
     
     
       8. The method of  claim 6 , wherein the scrambling of the feedback payload comprises:
 determining that, for each scrambling sequence corresponding to a given DMRS-PG, a DMRS-PGID associated with the given DMRS-PG is successfully detected from one of the DCIs, setting the scrambling sequence, which has the associated DMRS-PG being successfully detected from one of the DCIs, as an active scrambling sequence; 
 determining a scrambling order based on all the successfully detected DMRS-PGIDs associated with their corresponding DMRS-PGs; 
 determining, based on the determined scrambling order, that each one of the active scrambling sequences precedes at least one of the other active scrambling sequences; 
 scrambling the UCI signal based on the active scrambling sequence preceding all the other active scrambling sequences; and 
 for each one of the remaining active scrambling sequences, after the UCI signal has been scrambled based on all other active scrambling sequences preceding this remaining active scrambling sequence, scrambling the UCI signal based on this remaining active scrambling sequence. 
 
     
     
       9. The method of  claim 8 , wherein the determining of the scrambling order comprises:
 sorting the detected DMRS-PGIDs in ascending order; 
 sorting the detected DMRS-PGIDs in an descending order; or 
 sorting the detected DMRS-PGIDs in a manner predetermined by a technical standard. 
 
     
     
       10. The method of  claim 1 , wherein:
 the one or more measurements associated with each DCI comprise measurements of signaling on a channel associated with the DMRS-PG corresponding to the DCI; and 
 the multi-port-group UCI signal comprises at least channel state information associated with each received DCI, Hybrid Automatic Repeat Request acknowledgement information associated with each received DCI, and/or scheduling request information associated with each received DCI. 
 
     
     
       11. A method for wireless communication by a network entity, comprising:
 generating a plurality of downlink control information (DCI) signals that schedule a user equipment (UE) for uplink transmission of uplink control information (UCI), wherein each DCI signal contains a Demodulation Reference Signal Port Group Identifier (DMRS-PGID) associated with a unique Demodulation Reference Signal Port Group (DMRS-PG) of a plurality of DMRS-PGs; 
 transmitting the DCI signals to the UE; 
 receiving a multi-port-group UCI signal from the UE, wherein the multi-port-group UCI signal includes feedback information scheduled by the successfully received DCIs of the transmitted plurality of DCI signals, as well as indications on whether the transmitted DCI signals are successfully received by the UE; 
 processing the multi-port-group UCI signal to determine association between the feedback information and the successful reception of each transmitted DCI signal. 
 
     
     
       12. The method of  claim 11 , wherein the processing of the multi-port-group UCI signal comprises:
 identifying a multi-port-group UCI bitmap within the multi-port-group UCI signal and a corresponding portion of the multi-port-group UCI bitmap that corresponds to a DMRS-PG within the plurality of DMRS-PGs; 
 determining whether the corresponding portion includes a first value indicating the DCI corresponding to the DMRS-PG is received, or a second value indicating that the DCI corresponding to the DMRS-PG is not received. 
 
     
     
       13. The method of  claim 12 , wherein a total number of DMRS-PGs within the plurality of DMRS-PGs is configured to the UE based at least on any combination of an RRC configuration, and/or a separate DCI indication, and/or system information broadcasting, wherein a total number of portions within the UCI bitmap equals the total number of DMRS-PGs within the plurality of DMRS-PGs. 
     
     
       14. The method of  claim 12 , wherein the identifying comprises:
 determining a DMRS-PG Identifier (ID) associated with the DMRS-PG; and 
 locating the corresponding portion of the multi-port-group UCI bitmap based on the determined DMRS-PGID. 
 
     
     
       15. The method of  claim 12 , wherein the processing of the multi-port-group UCI signal further comprises:
 determining that the corresponding portion includes the first value indicating that DCI was received from the DMRS-PG; 
 determining that the UE received the DCI associated with the DMRS-PG in response to the determination that the corresponding portion includes the first value; and 
 determining that the UCI signal includes feedback information relating to the DMRS-PG in response to the determination that the corresponding portion includes the first value. 
 
     
     
       16. The method of  claim 12 , wherein the processing of the multi-port-group UCI signal further comprises:
 determining that the corresponding portion includes the second value indicating that DCI was not received from the DMRS-PG; 
 determining that the UE did not receive the DCI associated with the DMRS-PG in response to the determination that the corresponding portion includes the second value; and 
 determining that the UCI signal does not include feedback information relating to the DMRS-PG in response to the determination that the corresponding portion includes the second value. 
 
     
     
       17. The method of  claim 11 , wherein the processing of the multi-port-group UCI signal comprises:
 determining a plurality of scrambling sequences associated with the plurality of DMRS-PGs, wherein each scrambling sequence is associated with a unique DMRS-PG within the plurality of DMRS-PGs; 
 determining from a plurality of scrambling sequences, for each DMRS-PGID of the DMRS-PGIDs contained in the transmitted DCIs, a scrambling sequence associated with this DMRS-PGID contained in a transmitted DCI; and 
 descrambling the multi-port-group UCI signal in accordance with the determined scrambling order and the respective scrambling sequences. 
 
     
     
       18. The method of  claim 17 , wherein a total number of DMRS-PGs within the plurality of DMRS-PGs is configured to the UE based at least on an RRC configuration, and/or a separate DCI indication, and/or system information broadcasting, wherein a total number of scrambling sequences within the plurality of scrambling sequences equals the total number of DMRS-PGs within the plurality of DMRS-PGs, wherein the plurality of scrambling sequences is based at least on predefinition within a standard, and/or RRC configuration, and/or DCI indication, and/or system information broadcast. 
     
     
       19. The method of  claim 17 , wherein the processing further comprises:
 determining based on the descrambling that the descrambling was successful; 
 determining that each of the respective DCIs associated with the plurality of DMRS-PGs was received by the UE; 
 determining that the UCI signal includes feedback information relating to the DMRS-PGs in response to the determination that each of the respective DCIs associated with the plurality of DMRS-PGs was received by the UE. 
 
     
     
       20. The method of  claim 17 , wherein the processing further comprises:
 determining based on the descrambling that the descrambling was not successful; 
 determining that the UE did not receive each of the respective DCIs associated with the plurality of DMRS-PGs; 
 adjusting the scrambling order by selecting one or more of the DMRS-PGIDs in the plurality of corresponding DMRS-PGIDs for removal from the scrambling order; 
 re-descrambling the feedback payload obtained from the multi-port-group UCI signal in accordance with the adjusted scrambling order; and 
 iteratively re-performing the adjusting and the re-descrambling until descrambling is successful; and 
 based on scrambling sequences used in the successful descrambling and the scrambling sequences associated with the DMRS-PGs corresponding to the transmitted DCIs, determine that the UCI signal includes feedback information relating to the DMRS-PGs corresponding to the scrambling sequences used in the successful descrambling, and that the UCI signal does not include feedback information relating to the DMRS-PGs corresponding to the scrambling sequences associated with the transmitted DCIs but not used in the successful descrambling. 
 
     
     
       21. The method of  claim 11 , wherein:
 processing the multi-port-group UCI signal comprises:
 determining that the UCI signal includes feedback information that corresponds to the DMRS-PGs associated with the transmitted DCI signals; and 
 obtaining the feedback information from the UCI signal; 
 
 the method further comprises:
 identifying based on the obtained feedback information:
 an adjustment of one or more transmission parameters associated with communication between the UE and the DMRS-PG based on Channel Status Information (CSI) included in the UCI; 
 a transmission or re-transmission of data based on Hybrid Automatic Repeat Request (HARQ) information included in the UCI; or 
 a modification of a schedule associated with the UE based on a scheduling request included in the UCI; and 
 
 communicating with the UE in accordance with the adjustment of the one or more transmission parameters, the transmission or re-transmission of the data, or the modification of the schedule. 
 
 
     
     
       22. An apparatus, comprising:
 at least one transceiver configured to receive a plurality of downlink control information (DCI) signals, wherein each DCI signal is associated with a Demodulation Reference Signal (DMRS) Port Group (DMRS-PG) of a plurality of DMRS-PGs, and each DCI signal within the plurality of DCI signals contains a DMRS-PG Identifier (DMRS-PGID) identifying the associated DMRS-PG; 
 a memory system configured to store data, instructions, or a combination thereof, and 
 a processing system coupled to the memory system and the at least one transceiver, wherein the processing system and the memory system are configured to:
 perform one or more measurements associated with each DCI signal; and 
 generate a multi-port-group uplink control information (UCI) signal based on the one or more measurements associated with each DCI signal, wherein the multi-port-group UCI signal contains an indication of whether each DCI is successfully received. 
 
 
     
     
       23. The apparatus of  claim 22 , wherein to generate the multi-port-group UCI signal, the processing system and the memory system are further configured to:
 generate a multi-port-group UCI bitmap having a plurality of portions corresponding to the plurality of DMRS-PGs, wherein each portion of the UCI bitmap corresponds to a unique DMRS-PG within the plurality of DMRS-PGs; and 
 pack the UCI bitmap into the multi-port-group UCI signal, and transmitting the multi-port-group UCI signal to at least one network entity associated with at least one DCI of the plurality of DCI signals. 
 
     
     
       24. The apparatus of  claim 23 ,
 wherein a total number of DMRS-PGs within the plurality of DMRS-PGs is obtained by the UE based at least on any combination of an RRC configuration, and/or a separate DCI indication, and/or system information broadcasting, wherein the total number of portions within the UCI bitmap equals the total number of DMRS-PGs within the plurality of DMRS-PGs. 
 
     
     
       25. The apparatus of  claim 23 , wherein to generate the multi-port-group UCI signal, the processing system and the memory system are further configured to:
 determine that, for each portion of the UCI bitmap corresponding to a given DMRS-PG, a DMRS-PGID associated with the given DMRS-PG is successfully detected from one of the DCIs; and 
 set this portion of the bitmap that has an associated DMRS-PGID being successfully detected from one of the received DCIs to a first value. 
 
     
     
       26. The apparatus of  claim 23 , wherein:
 to generate the multi-port-group UCI signal, the processing system and the memory system are further configured to scramble the multi-port-group UCI signal using a plurality of scrambling sequences associated with the plurality of DMRS-PGs, wherein each scrambling sequence is associated with a unique DMRS-PG within the plurality of DMRS-PGs; and 
 the processing system and the memory system are further configured to transmit the scrambled multi-port-group UCI signal to at least one network entity associated with at least one DCI. 
 
     
     
       27. The apparatus of  claim 22 , wherein:
 to generate the multi-port-group UCI signal, the processing system and the memory system are further configured to scramble the multi-port-group UCI signal using a plurality of scrambling sequences associated with the plurality of DMRS-PGs, wherein each scrambling sequence is associated with a unique DMRS-PG within the plurality of DMRS-PGs; and 
 the processing system and the memory system are further configured to transmit the scrambled multi-port-group UCI signal to at least one network entity associated with at least one DCI of the plurality of DCIs. 
 
     
     
       28. The apparatus of  claim 27 ,
 wherein a total number of DMRS-PGs within the plurality of DMRS-PGs is obtained by the UE based at least on any combination of an RRC configuration, or a separate DCI indication, or system information broadcasting, wherein a total number of scrambling sequences within the plurality of scrambling sequences equals the total number of DMRS-PGs within the plurality of DMRS-PGs, wherein the plurality of scrambling sequences is based at least on predefinition within a standard, and/or RRC configuration, and/or DCI indication, and/or system information broadcast. 
 
     
     
       29. The apparatus of  claim 27 , wherein to scramble the feedback payload, the processing system and the memory system are further configured to:
 determine that, for each scrambling sequence corresponding to a given DMRS-PG, a DMRS-PGID associated with the given DMRS-PG is successfully detected from one of the DCIs, setting the scrambling sequence, which has the associated DMRS-PG being successfully detected from one of the DCIs, as an active scrambling sequence; 
 determine a scrambling order based on all the successfully detected DMRS-PGIDs associated with their corresponding DMRS-PGs; 
 determine, based on the determined scrambling order, that each one of the active scrambling sequences precedes at least one of the other active scrambling sequences; 
 scramble the UCI signal based on the active scrambling sequence preceding all the other active scrambling sequences; and 
 for each one of the remaining active scrambling sequences, after the UCI signal has been scrambled based on all other active scrambling sequences preceding this remaining active scrambling sequence, scrambling the UCI signal based on this remaining active scrambling sequence. 
 
     
     
       30. The apparatus of  claim 22 , wherein:
 the one or more measurements associated with each DCI comprise measurements of signaling on a channel associated with the DMRS-PG corresponding to the DCI; and 
 the multi-port-group UCI signal comprises at least channel state information associated with each received DCI, Hybrid Automatic Repeat Request acknowledgement information associated with each received DCI, and/or scheduling request information associated with each received DCI. 
 
     
     
       31. An apparatus, comprising:
 a memory system configured to store data, instructions, or a combination thereof; and 
 a processing system coupled to the memory system, wherein the processing system and the memory system are configured to generate a plurality of downlink control information (DCI) signals that schedule a user equipment (UE) for uplink transmission of uplink control information (UCI), wherein each DCI signal contains a Demodulation Reference Signal Port Group Identifier (DMRS-PGID) associated with a unique Demodulation Reference Signal Port Group (DMRS-PG) of a plurality of DMRS-PGs; and 
 at least one transceiver configured to:
 transmit the DCI signals to the UE; and 
 receive a multi-port-group UCI signal from the UE, wherein the multi-port-group UCI signal includes feedback information scheduled by the successfully received DCIs of the transmitted plurality of DCI signals, as well as indications on whether the transmitted DCI signals are successfully received by the UE; 
 
 wherein the processing system and the memory system are further configured to process the multi-port-group UCI signal to determine association between the feedback information and the successful reception of each transmitted DCI signal. 
 
     
     
       32. The apparatus of  claim 31 , wherein to process the multi-port-group UCI signal, the processing system and the memory system are further configured to:
 identify a multi-port-group UCI bitmap within the multi-port-group UCI signal and a corresponding portion of the multi-port-group UCI bitmap that corresponds to a DMRS-PG within the plurality of DMRS-PGs; and 
 determine whether the corresponding portion includes a first value indicating the DCI corresponding to the DMRS-PG is received, or a second value indicating that the DCI corresponding to the DMRS-PG is not received. 
 
     
     
       33. The apparatus of  claim 32 , wherein a total number of DMRS-PGs within the plurality of DMRS-PGs is configured to the UE based at least on any combination of an RRC configuration, and/or a separate DCI indication, and/or system information broadcasting, wherein a total number of portions within the UCI bitmap equals the total number of DMRS-PGs within the plurality of DMRS-PGs. 
     
     
       34. The apparatus of  claim 32 , wherein to identify the multi-port-group UCI bitmap, the processing system and the memory system are further configured to:
 determine a DMRS-PG Identifier (ID) associated with the DMRS-PG; and 
 locate the corresponding portion of the multi-port-group UCI bitmap based on the determined DMRS-PGID. 
 
     
     
       35. The apparatus of  claim 32 , wherein to process the multi-port-group UCI signal, the processing system and the memory system are further configured to:
 determine that the corresponding portion includes the first value indicating that DCI was received from the DMRS-PG; 
 determine that the UE received the DCI associated with the DMRS-PG in response to the determination that the corresponding portion includes the first value; and 
 determine that the UCI signal includes feedback information relating to the DMRS-PG in response to the determination that the corresponding portion includes the first value. 
 
     
     
       36. The apparatus of  claim 32 , wherein to process the multi-port-group UCI signal, the processing system and the memory system are further configured to:
 determine that the corresponding portion includes the second value indicating that DCI was not received from the DMRS-PG; 
 determine that the UE did not receive the DCI associated with the DMRS-PG in response to the determination that the corresponding portion includes the second value; and 
 determine that the UCI signal does not include feedback information relating to the DMRS-PG in response to the determination that the corresponding portion includes the second value. 
 
     
     
       37. The apparatus of  claim 31 , wherein to process the multi-port-group UCI signal, the processing system and the memory system are further configured to:
 determine a plurality of scrambling sequences associated with the plurality of DMRS-PGs, wherein each scrambling sequence is associated with a unique DMRS-PG within the plurality of DMRS-PGs; 
 determine from a plurality of scrambling sequences, for each DMRS-PGID of the DMRS-PGIDs contained in the transmitted DCIs, a scrambling sequence associated with this DMRS-PGID contained in a transmitted DCI; and 
 descramble the multi-port-group UCI signal in accordance with the determined scrambling order and the respective scrambling sequences. 
 
     
     
       38. The apparatus of  claim 37 ,
 wherein a total number of DMRS-PGs within the plurality of DMRS-PGs is configured to the UE based at least on an RRC configuration, and/or a separate DCI indication, and/or system information broadcasting, wherein a total number of scrambling sequences within the plurality of scrambling sequences equals the total number of DMRS-PGs within the plurality of DMRS-PGs, wherein the plurality of scrambling sequences is based at least on predefinition within a standard, and/or RRC configuration, and/or DCI indication, and/or system information broadcast. 
 
     
     
       39. The apparatus of  claim 37 , wherein to process the multi-port-group UCI signal, the processing system and the memory system are further configured to:
 determine based on the descrambling that the descrambling was successful; 
 determine that each of the respective DCIs associated with the plurality of DMRS-PGs was received by the UE; 
 determine that the UCI signal includes feedback information relating to the DMRS-PGs in response to the determination that each of the respective DCIs associated with the plurality of DMRS-PGs was received by the UE. 
 
     
     
       40. The apparatus of  claim 37 , wherein to process the multi-port-group UCI signal, the processing system and the memory system are further configured to:
 determine based on the descrambling that the descrambling was not successful; 
 determine that the UE did not receive each of the respective DCIs associated with the plurality of DMRS-PGs; 
 adjust the scrambling order by selecting one or more of the DMRS-PGIDs in the plurality of corresponding DMRS-PGIDs for removal from the scrambling order; 
 re-descramble the feedback payload obtained from the multi-port-group UCI signal in accordance with the adjusted scrambling order; and 
 iteratively re-perform the adjusting and the re-descrambling until descrambling is successful; and 
 based on scrambling sequences used in the successful descrambling and the scrambling sequences associated with the DMRS-PGs corresponding to the transmitted DCIs, determine that the UCI signal includes feedback information relating to the DMRS-PGs corresponding to the scrambling sequences used in the successful descrambling, and that the UCI signal does not include feedback information relating to the DMRS-PGs corresponding to the scrambling sequences associated with the transmitted DCIs but not used in the successful descrambling. 
 
     
     
       41. An apparatus, comprising:
 means for receiving a plurality of downlink control information (DCI) signals, wherein each DCI signal is associated with a Demodulation Reference Signal (DMRS) Port Group (DMRS-PG) of a plurality of DMRS-PGs, and each DCI signal within the plurality of DCI signals contains a DMRS-PG Identifier (DMRS-PGID) identifying the associated DMRS-PG; 
 means for performing one or more measurements associated with each DCI signal; and 
 means for generating a multi-port-group uplink control information (UCI) signal based on the one or more measurements associated with each DCI signal, wherein the multi-port-group UCI signal contains an indication of whether each DCI is successfully received. 
 
     
     
       42. The apparatus of  claim 41 , wherein the means for generating the multi-port-group UCI signal comprises:
 means for generating a multi-port-group UCI bitmap having a plurality of portions corresponding to the plurality of DMRS-PGs, wherein each portion of the UCI bitmap corresponds to a unique DMRS-PG within the plurality of DMRS-PGs; and 
 means for packing the UCI bitmap into the multi-port-group UCI signal, and transmitting the multi-port-group UCI signal to at least one network entity associated with at least one DCI of the plurality of DCI signals. 
 
     
     
       43. The apparatus of  claim 42 ,
 wherein a total number of DMRS-PGs within the plurality of DMRS-PGs is obtained by the UE based at least on any combination of an RRC configuration, and/or a separate DCI indication, and/or system information broadcasting, wherein the total number of portions within the UCI bitmap equals the total number of DMRS-PGs within the plurality of DMRS-PGs. 
 
     
     
       44. The apparatus of  claim 41 , wherein the means for generating the multi-port-group UCI signal comprises:
 means for scrambling the multi-port-group UCI signal using a plurality of scrambling sequences associated with the plurality of DMRS-PGs, wherein each scrambling sequence is associated with a unique DMRS-PG within the plurality of DMRS-PGs; 
 means for transmitting the scrambled UCI signal to at least one network entity associated with at least one DCI of the plurality of DCIs. 
 
     
     
       45. The apparatus of  claim 44 ,
 wherein a total number of DMRS-PGs within the plurality of DMRS-PGs is obtained by the UE based at least on any combination of an RRC configuration, or a separate DCI indication, or system information broadcasting, wherein a total number of scrambling sequences within the plurality of scrambling sequences equals the total number of DMRS-PGs within the plurality of DMRS-PGs, wherein the plurality of scrambling sequences is based at least on predefinition within a standard, and/or RRC configuration, and/or DCI indication, and/or system information broadcast. 
 
     
     
       46. An apparatus, comprising:
 means for generating a plurality of downlink control information (DCI) signals that schedule a user equipment (UE) for uplink transmission of uplink control information (UCI), wherein each DCI signal contains a Demodulation Reference Signal Port Group Identifier (DMRS-PGID) associated with a unique Demodulation Reference Signal Port Group (DMRS-PG) of a plurality of DMRS-PGs; 
 means for transmitting the DCI signals to the UE; 
 means for receiving a multi-port-group UCI signal from the UE, wherein the multi-port-group UCI signal includes feedback information scheduled by the successfully received DCIs of the transmitted plurality of DCI signals, as well as indications on whether the transmitted DCI signals are successfully received by the UE; 
 means for processing the multi-port-group UCI signal to determine association between the feedback information and the successful reception of each transmitted DCI signal. 
 
     
     
       47. The apparatus of  claim 46 , wherein the means for processing the multi-port-group UCI signal comprises:
 means for identifying a multi-port-group UCI bitmap within the multi-port-group UCI signal and a corresponding portion of the multi-port-group UCI bitmap that corresponds to a DMRS-PG within the plurality of DMRS-PGs; and 
 means for determining whether the corresponding portion includes a first value indicating the DCI corresponding to the DMRS-PG is received, or a second value indicating that the DCI corresponding to the DMRS-PG is not received. 
 
     
     
       48. The apparatus of  claim 47 , wherein a total number of DMRS-PGs within the plurality of DMRS-PGs is configured to the UE based at least on any combination of an RRC configuration, and/or a separate DCI indication, and/or system information broadcasting, wherein a total number of portions within the UCI bitmap equals the total number of DMRS-PGs within the plurality of DMRS-PGs. 
     
     
       49. The apparatus of  claim 46 , wherein the means for identifying comprises:
 means for determining a DMRS-PG Identifier (ID) associated with the DMRS-PG; and 
 means for locating the corresponding portion of the multi-port-group UCI bitmap based on the determined DMRS-PGID. 
 
     
     
       50. The apparatus of  claim 49 , wherein the means for processing the multi-port-group UCI signal comprises:
 means for determining that the corresponding portion includes the first value indicating that DCI was received from the DMRS-PG; 
 means for determining that the UE received the DCI associated with the DMRS-PG in response to the determination that the corresponding portion includes the first value; 
 means for determining that the UCI signal includes feedback information relating to the DMRS-PG in response to the determination that the corresponding portion includes the first value. 
 
     
     
       51. A non-transitory computer-readable medium comprising at least one instruction for causing a processor to perform operations, comprising:
 code for receiving a plurality of downlink control information (DCI) signals, wherein each DCI signal is associated with a Demodulation Reference Signal (DMRS) Port Group (DMRS-PG) of a plurality of DMRS-PGs, and each DCI signal within the plurality of DCI signals contains a DMRS-PG Identifier (DMRS-PGID) identifying the associated DMRS-PG; 
 code for performing one or more measurements associated with each DCI signal; and 
 code for generating a multi-port-group uplink control information (UCI) signal based on the one or more measurements associated with each DCI signal, wherein the multi-port-group UCI signal contains an indication of whether each DCI is successfully received. 
 
     
     
       52. The non-transitory computer-readable medium of  claim 51 , wherein the code for generating the multi-port-group UCI signal comprises:
 code for generating a multi-port-group UCI bitmap having a plurality of portions corresponding to the plurality of DMRS-PGs, wherein each portion of the UCI bitmap corresponds to a unique DMRS-PG within the plurality of DMRS-PGs; and 
 code for packing the UCI bitmap into the multi-port-group UCI signal, and transmitting the multi-port-group UCI signal to at least one network entity associated with at least one DCI of the plurality of DCI signals. 
 
     
     
       53. The non-transitory computer-readable medium of  claim 52 ,
 wherein a total number of DMRS-PGs within the plurality of DMRS-PGs is obtained by the UE based at least on any combination of an RRC configuration, and/or a separate DCI indication, and/or system information broadcasting, wherein the total number of portions within the UCI bitmap equals the total number of DMRS-PGs within the plurality of DMRS-PGs. 
 
     
     
       54. The non-transitory computer-readable medium of  claim 51 , wherein the code for generating the multi-port-group UCI signal comprises:
 code for scrambling the multi-port-group UCI signal using a plurality of scrambling sequences associated with the plurality of DMRS-PGs, wherein each scrambling sequence is associated with a unique DMRS-PG within the plurality of DMRS-PGs; 
 code for transmitting the scrambled UCI signal to at least one network entity associated with at least one DCI of the plurality of DCIs. 
 
     
     
       55. The non-transitory computer-readable medium of  claim 54 ,
 wherein a total number of DMRS-PGs within the plurality of DMRS-PGs is obtained by the UE based at least on any combination of an RRC configuration, or a separate DCI indication, or system information broadcasting, wherein a total number of scrambling sequences within the plurality of scrambling sequences equals the total number of DMRS-PGs within the plurality of DMRS-PGs, wherein the plurality of scrambling sequences is based at least on predefinition within a standard, and/or RRC configuration, and/or DCI indication, and/or system information broadcast. 
 
     
     
       56. A non-transitory computer-readable medium comprising at least one instruction for causing a processor to perform operations, comprising:
 code for generating a plurality of downlink control information (DCI) signals that schedule a user equipment (UE) for uplink transmission of uplink control information (UCI), wherein each DCI signal contains a Demodulation Reference Signal Port Group Identifier (DMRS-PGID) associated with a unique Demodulation Reference Signal Port Group (DMRS-PG) of a plurality of DMRS-PGs; 
 code for transmitting the DCI signals to the UE; 
 code for receiving a multi-port-group UCI signal from the UE, wherein the multi-port-group UCI signal includes feedback information scheduled by the successfully received DCIs of the transmitted plurality of DCI signals, as well as indications on whether the transmitted DCI signals are successfully received by the UE; 
 code for processing the multi-port-group UCI signal to determine association between the feedback information and the successful reception of each transmitted DCI signal. 
 
     
     
       57. The non-transitory computer-readable medium of  claim 56 , wherein the code for processing the multi-port-group UCI signal comprises:
 code for identifying a multi-port-group UCI bitmap within the multi-port-group UCI signal and a corresponding portion of the multi-port-group UCI bitmap that corresponds to a DMRS-PG within the plurality of DMRS-PGs; and 
 code for determining whether the corresponding portion includes a first value indicating the DCI corresponding to the DMRS-PG is received, or a second value indicating that the DCI corresponding to the DMRS-PG is not received. 
 
     
     
       58. The non-transitory computer-readable medium of  claim 57 , wherein a total number of DMRS-PGs within the plurality of DMRS-PGs is configured to the UE based at least on any combination of an RRC configuration, and/or a separate DCI indication, and/or system information broadcasting, wherein a total number of portions within the UCI bitmap equals the total number of DMRS-PGs within the plurality of DMRS-PGs. 
     
     
       59. The non-transitory computer-readable medium of  claim 56 , wherein the code for identifying comprises:
 code for determining a DMRS-PG Identifier (ID) associated with the DMRS-PG; and 
 code for locating the corresponding portion of the multi-port-group UCI bitmap based on the determined DMRS-PGID. 
 
     
     
       60. The non-transitory computer-readable medium of  claim 59 , wherein the code for processing the multi-port-group UCI signal comprises:
 code for determining that the corresponding portion includes the first value indicating that DCI was received from the DMRS-PG; 
 code for determining that the UE received the DCI associated with the DMRS-PG in response to the determination that the corresponding portion includes the first value; 
 code for determining that the UCI signal includes feedback information relating to the DMRS-PG in response to the determination that the corresponding portion includes the first value.